<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8"> 
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
	<title>帮助中心</title>
	<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">
	<script src="https://cdn.bootcss.com/jquery/2.1.1/jquery.min.js"></script>
	<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

<div class="panel-group" id="accordion">
	<div class="panel panel-info">
		<div class="panel-heading">
			<h4 class="panel-title">
				<a data-toggle="collapse" data-parent="#accordion" 
				   href="#collapseOne">
           常见问题1
				</a>
			</h4>
		</div>
		<div id="collapseOne" class="panel-collapse collapse in">
			<div class="panel-body">
				<p>常见问题1常见问题1常见问题1</p><p>常见问题1常见问题1常见问题1</p>
			</div>
		</div>
	</div>
	<div class="panel panel-info">
		<div class="panel-heading">
			<h4 class="panel-title">
				<a data-toggle="collapse" data-parent="#accordion" 
				   href="#collapseTwo">
           常见问题2
				</a>
			</h4>
		</div>
		<div id="collapseTwo" class="panel-collapse collapse">
			<div class="panel-body">
				<p>常见问题2常见问题2常见问题2</p><p>常见问题2常见问题2常见问题2</p>
			</div>
		</div>
	</div>
	<div class="panel panel-info">
		<div class="panel-heading">
			<h4 class="panel-title">
				<a data-toggle="collapse" data-parent="#accordion" 
				   href="#collapseThree">
           常见问题3
				</a>
			</h4>
		</div>
		<div id="collapseThree" class="panel-collapse collapse">
			<div class="panel-body">
				<p>常见问题3常见问题3常见问题3</p><p>常见问题3常见问题3常见问题3</p>
			</div>
		</div>
	</div>
	<div class="panel panel-info">
		<div class="panel-heading">
			<h4 class="panel-title">
				<a data-toggle="collapse" data-parent="#accordion" 
				   href="#collapseFour">
           常见问题4
				</a>
			</h4>
		</div>
		<div id="collapseFour" class="panel-collapse collapse">
			<div class="panel-body">
				<p>常见问题4常见问题4常见问题4</p><p>常见问题4常见问题4常见问题4</p>
			</div>
		</div>
	</div>
</div>
<script type="text/javascript">
	$(function () { $('#collapseFour').collapse({
		toggle: false
	})});
	$(function () { $('#collapseTwo').collapse('show')});
	$(function () { $('#collapseThree').collapse('toggle')});
	$(function () { $('#collapseOne').collapse('hide')});
</script>  

</body>
</html>